Connection
6.6 Antenna connector
SCALANCE W778-1 /W738-1
Operating Instructions, 07/2020, C79000-G8976-C450-06
47
6.6
Antenna connector
The SCALANCE W778/W738 has two antenna connectors of the type N-Connect located
on the top of the device.
Figure 6-1 Antenna connectors
①
Antenna connector R1 A1
②
Antenna connector R1 A2
Procedure
Follow the steps below to connect a cable for an external antenna:
1.
Remove the caps.
2.
Insert the connector on the antenna cable into the N-Connect socket and tighten the
sleeve nut of the plug on the socket (key size SW19, torque 1.7 Nm).
3.
If you only use one antenna, you need to connect this to the device via antenna
connector R1 A1 (position
①
).
4.
Screw a terminating resistor to the unused antenna connector R1 A2 (position
②
) if you
are only using one antenna.
Note
Terminating resistor
You can connect one or two external antennas to the WLAN interface. At the antenna
connector R1A1, there must be always be an antenna connected as soon as the
WLAN Interface is turned on. The unused antenna connector R1A2 must have a
terminating resistor fitted (see Accessories (Page 17).
if no antenna is connected, the relevant interface must also be disabled for RX and
TX. Otherwise, there may be transmission disruptions.
